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Image processing apparatus, image processing method, and image processing program

a technology of image processing and image processing method, applied in the field of image processing apparatus, image processing method, image processing program, can solve the problems of inability to judge the spatial characteristics of images, erroneous judgment of similarity, etc., and achieve the effect of accurate evaluation

Active Publication Date: 2015-11-10
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach allows for more precise evaluation of similarity between images with multiple subjects within the same pixel value range, reducing errors in image registration and generating images where subjects match more accurately.

Problems solved by technology

Therefore, spatial characteristics of the images cannot be judged, and there are cases in which the judgment of similarity is erroneous.

Method used

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  • Image processing apparatus, image processing method, and image processing program
  • Image processing apparatus, image processing method, and image processing program
  • Image processing apparatus, image processing method, and image processing program

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first embodiment

[0073]FIG. 3A is a collection diagrams for explaining the method by which the first and second images are divided in the The deformed first image V1a and the second image V2 illustrated in FIG. 3A represent xy planes having the centers of three dimensional images as the origins thereof. For the purpose of the explanation, each of the control points X within the deformed first image V1a are displaced only within the xy plane. As illustrated in FIG. 3A, the dividing conditions in the present embodiment are defined such that reference points P1 and P2 are respectively set in the deformed first image V1a and the second image V2, and divide the deformed first image V1a and the second image V2 according to ranges of distances from the reference points P1 and P2. In greater detail, the deformed first image Vla and the second image V2 are divided into k spherical or hollow spherical regions that satisfy 0≦d0, d0≦d1, d1≦d2, . . . , dk-1≦dk. Then, the evaluation function S(μ) is defined by t...

second embodiment

[0098]As shown in Formula (4), in the evaluation function employed by the present embodiment, the item that represents the measure of similarity between the deformed first image and the second image is weighted by the probability data PL(m; μ|f) that represents the certainty of the combination of the two images for each combination of pixel values of the deformed first image and the second image, according to the certainty of the combination of the pixel values of the two images. Note that as illustrated in FIG. 3A, the dividing conditions in the second embodiment are defined such that reference points P1 and P2 are respectively set in the deformed first image V1a and the second image V2, and divide the deformed first image V1a and the second image V2 according to ranges of distances from the reference points P1 and P2. In addition, in the evaluation function S(μ) represented by Formula (4), degrees of similarity (degrees of divided image similarity) of pairs (A0, B0), (A1, B1), . ....

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Abstract

A first image and a second image are obtained; the amount of deformation of the first image is estimated by evaluating the degree of similarity between a deformed first image and the second image, using an evaluation function that evaluates the correlation between the distribution of corresponding pixel values within the two images; and an image, which is the first image deformed based on the estimated amount of deformation, is generated. The evaluation function evaluates the degree of similarity between the deformed first image and the second image, based on degrees of similarities of divided images that represent degrees of similarities among the distributions of pixel values of each pair of divided first images and divided second images, which respectively are images that the deformed first image is divided into and images that the second image is divided into, according to predetermined dividing conditions.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation of PCT International Application No. PCT / JP2012 / 008000 filed on Dec. 14, 2012, which claims priority under 35 USC 5119(a) to Japanese Patent Application No. 2011-278239 filed on Dec. 20, 2011 and Japanese Patent Application No. 2012-244542 filed on Nov. 6, 2012. Each of the above applications is hereby expressly incorporated by reference, in its entirety, into the present application.TECHNICAL FIELD[0002]The present invention is related to an image processing apparatus, an image processing method, and an image processing program that generate an image, which is one of two images obtained by imaging a single subject, of which the image space has been deformed, such that the spatial positions of subjects within the two images match.BACKGROUND ART[0003]The non rigid registration technique, in which a converting function that causes spatial positions of subjects within two three dimensional images that are o...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G06T7/00G06T3/00A61B5/00A61B5/055A61B6/00
CPCG06T7/0012A61B5/0042A61B5/055A61B6/5235G06T3/0093G06T7/003A61B6/501A61B2576/00A61B2576/026G06T2207/10081G06T2207/20021G06T2207/30016G06T7/337G16H30/40G06T3/18
Inventor WANG, CAIHUA
Owner FUJIFILM CORP